Adjustable elevator



i one upon another.

UNirnn STATES ArtNr OFFICE.

GEORGE MILLIKEN, OE ONECO, ILLINOIS.

ADJUSTABLE ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 287,042, dated October23, 1883.

To all wwm, Ll may concern.-

Beit known that I, GEORGE MILLIKEN, a resident of Oneco', in the countyof Stephenson and State of Illinois, have invented certain` new anduseful Improvements in Adjustable Elevators; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such aswill enable others skilled in the art to which it pertains tomake and use the same.

' My invention is a new and improved portable and adjustable elevatorfor raising and loweringloads of any sort in situations where apermanent stationary elevator is not desirable. It is especially adaptedto theraising of brick, mortar, or other material in the con structionof buildings, or to the lowering of the inmates of the upper rooms of abuilding in case of re. Thedetails of its construction are fully shownin the accompanying drawings, and the device is described and explainedin the following` specification.

In the drawings, Figure l is a perspective View of the entire machine;Fig. 2, a side elevation of the elevating car or basket, and Fig. 3 arear elevation of the same. In these views, A A A/ A are the side piecesof a series of rectangular sections connect-ed by means of suitableclamps, GR, by means of which they are adapted to slide longitudinallyEach pair ofV side pieces A A is connected at the top by a round, B, andat the bottoni by a similar round, B. A rope, a, runs through suitablepulley-blocks, E, attached to the rounds B, and similar blocks, E,attached to the rounds B, and is securely fastened at one end to thelower round, B, of the topmost of the sliding sections. A windlass, L,is j ournalled in suitable bearings attached to the side pieces of thelowest of said sliding sections, and the rope and windlass are providedwith a hook and eye or other means by which the end of the rope may bereadily attached to or detached from the windlass. A ratchet, K, servesto hold the windlass in any desired position. It is evident thatif therope a be hooked to the windlass and wound thereon by turning the crankM, the sections will slide longitudinally one upon the other, and theentire structure be lengthened or raised, and that the unwinding of therope will lower the sections and shorten the machine. A

limitation ined April 24, less. (No moda.)

clamp or grip, Q, is attached tothe lower section, and when the framehas been raised to the desired height the rope a may be detached fromthe `windlass and secured in this clamp, as shown in Fig. 1. A secondrope, b, pro

vided with a hook, by means of which it can' be readily attached to ordetached from the windlass, extends through the entire length of theelevator, passes through a pulley-block at` taehed to theupper-cross-bar of the topmost sliding section, and is fastened at theend to the cross-bar T of a frame, S S, which supports a car or basket,X. The side pieces S S of this frame are outside of the side pieces A Aof the sliding sections and extend diagonally across them. Their upperends are in front of the sections and are united by the cross-bar T,while their lower ends are in rear of the sections and terminate in openhooks c. These hooks are the bearings of a shaft extending across thesections in rear thereof, and on this shaft are mounted two rollers, V,one immediately in rear of each side piece of the section and adapted toroll thereon. The basket X is provided with two pairs of verticalcleats, d e, rigidly attached to it, and through the upper and lowerends of these cleats pass the horizontal shafts WV XV', on which aremounted rollers x y y', which are in contact with the front faces of theside pieces of the sliding sections and roll thereon. The bar W isjournaled in suitable bearings attached to the side pieces S S, andforms a pivotal or hinge joint between said side pieces and the basketX. By means oi' this hinge-joint the distance between the rollers 00"(1/in front of the sliding sections and the rollers V in rear thereof maybe readily increased or decreased, and the basket and frame S S are thusenabled to pass up and down theladderorsupporting-framewithoutobstruction from the joints of the sliding sections. `The basket is hungin such a way that any weight placed in it` tends to press the rollers Va," y closer against the ladder; but no matter what the weight may bethe rollers swing apart readily in passing over the joints and closetogether again after passing them. By means of the open-hook bearings cthe rollers V and their shaft may be readily removed, when the frame S Sswings forward and may be readily removed from the ladder, taking withit the basket X.

IOO

It is evident that if the rope b be attached to the windlass the basketX may be raised or lowered at pleasure, and also that if the rope a beattached to the windlass the frame or ladder may be lengthened orshortened by turning` the crank M forward or backward.

A brake7 N, serves to regulate the speed of the windlass in lowering thebasket, or the ladder itself, Vand two hooks attached to the topmostsection of the ladder afford means for attaching` it to or suspending itfrom any permanent support on the wall of a building.

It is plain from the construction of the ladder and basket that thelatter may be raised andlowered equally well, whether the former is in avertical or oblique position.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an adjustable elevator, the eoinbination of a series of slidingsections forming an adjustable frame or ladder, a rope attached to saidsections and adapted to raise or lower them, a basket sliding` upon saidframe, a rope attached to the basket for the purpose of raising orlowering it, a single windlass, by means of'which said ropes areseparately coiled and uncoiled, and means by which one of said ropes may.be held independently of the windlass while the other is coiled oruncoiled.

2. The combination of the frame S S, basket X, hinged thereto, rollersV, attached to said frame, and rollers x y x 1j, attached to saidbasket, all combined and operating` substantially as described.

3. The combination of the frame S S, openhook bearings o, attachedthereto, and rollers V and their shaft, adapted to be readily insertedin or withdrawn from said bearings, substantially Yas andror the purposeset forth.

4. The combination of the ropes a b, windlass L, and clamp Q,constructed and operating1 substantially as described.

In testimony whereof I have signed this speciiication in the presence oftwo subscribing witnesses.

. v GEORGE MILLIKEN.

Vitnesses:

OsoAR TAYLOR, R. H. VVILns.

